Excited State

What are Compound Microscopes?
Most of the microscopes used today are compound. A compound microscope features two or more lenses. A hollow cylinder called the tube connects the two lenses. The top lens, the one people look through, is called the eyepiece. The bottom lens is known as the objective lens. Below the two lenses is...
Diamonds Are Forever
Diamonds are still a girl's best friend, right? We love the shiny gems. They are the most popular rocks sold today. But what exactly are they, anyway? Where do they come from? What else are they used for?
Use of diamonds
Diamond is a crystalline modification of pure carbon formed in the deep interior of the Earth, in the upper mantle at depths of more than 80-100 kilometers, at exceptionally high pressure and temperature. It is the most precious stone, the hardest and most wear-resistant mineral, the most...
What's In Your Beverage? How to Ensure Quality Control with CO2 Analytical Support
Calibration standards, performance audits, and the FDA's never-ending safety, labeling, and inspection requirements are just the tip of the iceberg when it comes to dealing with the increasingly stringent quality control standards of the beverage industry. As these quality standards become...
Interesting facts about metals
Metals have been used by people since ancient times. All the time the process of obtaining them was improved, useful alloys of various metals appeared. Let’s look at interesting facts about metals.

Compounds containing predominantly ionic bonding.

The sum of the molalities of all solute particles in a solution.

Describes processes that absorb heat energy.

Electrochemical cells in which spontaneous chemical reactions produce electricity, also called galvanic cells.

Redox reactions in which the oxidizing agent and the reducing agent are the same species.

Reactions that do not go to completion and occur in both the forward and reverse direction.

A term used to describe molecules and polyatomic ions that have one atom in the center and four atoms at the corners of a square.

A unit of energy in the SI system. One joule is 1 kg. m2/s2 which is also 0.2390 calorie.

A measure of the intensity of heat, i.e. the hotness or coldness of a sample. or object.

Any of a subgroup of rare-earth elements, of which the cerium and terbium metals comprise the other two subgroups.

All Chemicals - The Online Chemical Glossary